/Engine/Source/Runtime/RHI/Public/RHICommandList.h
void UpdateTexture3D ( FRHITexture3D * Texture, uint32 MipIndex, const struct [FUpdateTextureRegion3D](API\Runtime\RHI\FUpdateTextureRegion3D) & UpdateRegion, uint32 SourceRowPitch, uint32 SourceDepthPitch, const uint8 * SourceData )